Refractory Bricks Low Thermal Condictivity Fire Clay Brick
Features:
This kind refractory brick has the characteristics of crushing strength, modulus of rupture, stable re-fire performance, low thermal conductivity, excellent insulating property and steady quality, can be used for all kinds of high temperature furnace as the liners and insulating layer, can reduce the thermal energy lost in furnace to save energy, also reduce the weight of heat processing furnace.
Application:
It is not only widely used in insulating layers of various of thermal processing equipments, such as hot blast furnace, coke oven, glass kiln, etc, but also apply to linings in parts of furnace without strong high-temperature molten material erosive.It is not only widely used in insulating layers of various of thermal processing equipments, such as hot blast furnace, coke oven, glass kiln, etc, but also apply to linings in parts of furnace without strong high-temperature molten material erosive.
Technical Index:
| Item |
Chamotte Brick for Carbon Furnace |
| N-1 |
N-2a |
N-2b |
N-3a |
N-3b |
N-4 |
N-5 |
N-6 |
| Al2O3 % |
≥42 |
≥40 |
≥40 |
≥40 |
≥40 |
≥38 |
-- |
-- |
| Refractoriness ℃ |
≥1750 |
≥1730 |
≥1730 |
≥1710 |
≥1710 |
≥1690 |
≥1670 |
≥1580 |
| Refractoriness Under Load,℃,[0.2MPa×0.6%] |
≥1400 |
≥1350 |
-- |
≥1320 |
-- |
≥1300 |
-- |
-- |
| Permanent Linear Change, % |
1400℃×2h |
+0.1
-0.4
|
+0.1
-0.5
|
+0.2
-0.5
|
-- |
-- |
-- |
-- |
-- |
| 1350℃×2h |
-- |
-- |
-- |
+0.2
-0.5
|
+0.2
-0.5
|
+0.2
-0.5
|
+0.2
-0.5
|
-- |
| Apparent Porosity % |
≤22 |
≤26 |
≤24 |
≤24 |
≤26 |
≤24 |
≤26 |
≤28 |
| Cold Crushing Strength, MPa |
≥30.0 |
≥20.0 |
≥25.0 |
≥20.0 |
≥15.0 |
≥20.0 |
≥15.0 |
≥15.0 |
